Permission denied to call method XMLHttpRequest.open

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beren's picture
Submitted by beren on December 7, 2007 - 11:57

I'm moving thru the user guide and tutorials on the mashup server and hit up against a problem. The hello world client section says that I can include this:

<script type="text/javascript" src="http://yourip:7762/js/wso2/WSRequest.js"></script>
        <script type="text/javascript" src="http://yourip:7762/services/helloworld?stub"></script>

in a page on a different web server and call my stuff, but I get this error:

Permission denied to call method XMLHttpRequest.open

From what I can tell this is a secutiry issue in Firefox and is not allowed. Is this right or is there some other issue with my code? Is there a workaround for this? It seems there are similar issues with IE and Safari too.

Beren

‹ WSO2 Mashup Server 1.0 Beta Released Mashup client receives DOM Element object, not XML object ›
keith's picture

Its not an error on your part

Submitted by keith on December 10, 2007 - 01:42.
Hi Beren,You are right. There is nothing wrong eith your code, you get this errorbecause of Mozillas security policy (You cannot post data only to thedomain that the page originated from). In IE there is a workaround (Youcan add this domain as a trusted site and it will work) but firefox doesnot allow any workaounds for this.Thanks,Keith.
jonathan.wso2.com's picture

Proxying

Submitted by jonathan.wso2.com on December 10, 2007 - 11:31.
Note that when you invoke a stub inside a mashup, no security restrictions are enforced.  You could write a simple mashup, hosted at the same IP as your html, which passes the parameters to the remote service and passes along the results. The WSO2 ESB can be used to deploy such a proxy as well.  We are considering adding a simple zero-coding way to deploy a proxy on the Mashup Server, but we don't plan to have this as part of the 1.0 release feature set.
beren's picture

remote server

Submitted by beren on December 10, 2007 - 15:46.
Yep - I get that...I was just looking at the tutorial that said to try this. Perhaps an update to the user guide would be a good idea to clarify this point. beren
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